Yongnuo YN50mm f/1.8S DA DSM Standard Fixed-Focus Lens for Sony E-mount Half-Frame Cameras
SKU: GW21.0010
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One is for full format and the other for APS-C, whereby full format can also be operated on APS-C.
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I do not hear anything!
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Sony said it would get better if you updated the camera software
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Daa 1.8 FE has no OSS, therefore cheaper
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The lens is designed for APS-C cameras, so it is not intended for a full-frame camera like the a7.